Curio glass retaining clips

We have a large Curio. It is 69 & 1/2 inches tall and 3 ft. wide. It has 2 doors adjacent to a 27 inch framed convex glass center. The doors are framed convex glass also. There are 4 plastic retainers on each side of the curved [convex] center glass. I need a plastic retainer, I would like to purchase this item or items. I would like to send you a photo.
Measurements 11/16" long, 7/16" wide, 9/16" from center of mounting hole to center of Slightly raised area [looks like a pimple]